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arXiv · 0710.1265

Quantum Monte Carlo calculations of electroweak transition matrix elements in A = 6,7 nuclei

Muslema Pervin·Steven C. Pieper·R. B. Wiringa
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Abstract

Green's function Monte Carlo calculations of magnetic dipole, electric quadrupole, Fermi, and Gamow-Teller transition matrix elements are reported for A=6,7 nuclei. The matrix elements are extrapolated from mixed estimates that bracket the relevant electroweak operator between variational Monte Carlo and GFMC propagated wave functions. Because they are off-diagonal terms, two mixed estimates are required for each transition, with a VMC initial (final) state paired with a GFMC final (initial) state. The realistic Argonne v18 two-nucleon and Illinois-2 three-nucleon interactions are used to generate the nuclear states. In most cases we find good agreement with experimental data.

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Muslema Pervin, Steven C. Pieper, R. B. Wiringa. 2007-12-03. Quantum Monte Carlo calculations of electroweak transition matrix elements in A = 6,7 nuclei. https://doi.org/10.1103/physrevc.76.064319

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